Adapters make it simple and easy to stone triggers and sears for a perfect trigger pull. For use with Series 2 Stoning Fixture (sold separately). Notes:Adapter for use with Power Custom Series 2 stoning fixtureAdapter holds firearm hammer and sear in position on fixtureThis is the adapter only, the fixture is not included and must be purchased separatelyCZ 75 version is also compatible with Tangfoglio EA-9 & P9